KR19990027556A - Rear slip warning device of disc brake - Google Patents

Abstract

The present invention warns the driver of inadvertent slippage of the vehicle when the vehicle is stopped on a sloping road, so that the disc is slid backward during brake operation so that a safety accident due to the rear slippage can be prevented. A rear slip warning during disc brake operation, comprising a reverse rotation detection sensor for sensing, a warning means for warning a driver, and a control means for operating the warning means when a reverse rotation signal is input from the reverse rotation detection sensor. Provide the device.

Description

Rear slip warning device of disc brake

The present invention relates to a rear slip warning device during disc brake operation, and more particularly, has a reverse rotation sensor and warning means for detecting a disc sliding backward when the brake is operated, and a reverse rotation signal from the reverse rotation sensor. Is inputted by operating the warning means, in particular, the rear slip warning device during disc brake operation to warn the driver of inadvertent slippage of the vehicle due to inadvertent stoppage on a sloping road, thereby preventing safety accidents. It is about.

In general, a vehicle is provided with a braking device that serves to slow down or stop the vehicle speed while driving.

Such a braking device is a booster that doubles the pedal effort by using a vacuum pressure (engine suction pressure) generated by the power of an engine, and forms a pressure in each brake circuit and generates a volume of brake oil. It consists of a master cylinder that compensates for changes and quickly dissipates circuit pressure, and a wheel cylinder that stops the rotation of the wheel by the brake oil pressure and slows down the rotation speed.

The wheel cylinder is in close contact with an inner peripheral surface of the cylindrical drum synchronously rotating with the wheel wheels to close the brake shoe installed in the inner side of the wheel brake to generate a braking force, or to close the pad to the disk-shaped disk synchronously rotating with the wheel wheel It is installed in the disc brake that generates the braking force to activate the brake.

Here, a typical example of the disc brake is shown in FIG. 1, which is briefly described as follows.

As shown in the figure, the disc brake is largely installed to rotate synchronously with the wheel wheels, and pads 125 and 126 that are fixed to the inner knuckle arms of the wheel wheels and slide across both sides of the disk 110. The caliper body 130 which slides through the caliper bracket 120 to contact the pads 125 and 126 to the disk 110 by the action of the caliper bracket 120 and the piston 132 according to the hydraulic pressure It is composed largely.

On the other hand, a support portion 121 having a through hole 122 is formed at the lower end of the caliper bracket 120 to be fixed to the knuckle arm through a bolt, and a guide portion having sliding holes 123a at both ends of the upper end. 123 is formed, and a guide bracket 124 is provided to slide the pads 125 and 126 inside the guide part 123.

In addition, a cylinder 131 is formed in the center of the caliper body 130 in the sliding direction of the pads 125 and 126, and a piston 132 is provided in the cylinder 131 so that the cylinder 131 is formed. The pad 125 located inside the disk 110 is slid toward the disk 110 by hydraulic pressure injected into the disk 110, and fastening holes 133 corresponding to the sliding holes 123a are formed at both ends. A sliding pin 134 coupled to the sliding hole 123a of the guide part 123 is fixed to the fastening hole 133 through the bolt 135.

At the lower end of the caliper body 130, the pad 126 located on the outside of the disk 110 in contact with the outer surface of the disk 110 in response to the piston 132 during the operation of the piston 132. The close contact portion 138 extends toward the pad 126 to support the rear surface thereof.

When the disk brake is configured as described above, the pressure of the vacuum booster acting upon the stepping of the brake pedal injects the brake oil of the master cylinder into the cylinder 131 of the caliper body 130. At this time, the piston 132 is in close contact with the disk 110 while advancing by the injected brake oil.

While the inner pad 125 is in close contact with the disk 110, the caliper body 130 reacts backward with respect to the forward action of the piston 132 by the pressure of the brake oil. In this case, the caliper body 130 moves backwards while sliding in the sliding hole 123a of the guide part 123 of the caliper bracket 120 through the sliding pin 134. The close contact portion 138 formed at the lower portion of the caliper body 130 moving backward pulls the pad 126 on the outer side to closely contact the outer surface of the disc 110.

According to the above process, the contact of the disk 110 with the pads 125 and 126 stops the rotational motion of the disk 110 or decreases the rotational speed through the frictional force.

Meanwhile, when the vehicle is stopped, the disc brake is operated through the parking brake lever. In particular, when the vehicle is stopped on an inclined road, the vehicle is inadvertently slipped backwards. This could cause contact accidents with vehicles or obstacles in the rear.

Accordingly, the disc brake has been required to be provided with a device that can warn the driver of the phenomenon that the disc slips backward when the brake is operated.

Accordingly, an object of the present invention is to warn the driver of the rear slip of the vehicle inadvertently when the vehicle is stopped on a sloping road, so that the rear slip during the operation of the disc brake to prevent the safety accident caused by the rear slip. To provide a warning device.

1 is a perspective view of the bottom of the lumbar incision showing a typical disc brake

Figure 2 is a perspective view showing a rear slip warning device when the disc brake operation according to an embodiment of the present invention

Explanation of symbols on the main parts of the drawings

50: control means 51: reverse rotation sensor

52: warning means

The present invention for achieving the above object, in the disc brake that generates friction force with the disk interlocked with the wheel through the contact of the pad by the piston pressing force of the wheel cylinder, detecting that the disk slips backward during brake operation To provide a rear slip warning device during disc brake operation including a reverse rotation sensor, a warning means for warning a driver, and a control means for operating the warning means when a reverse signal is input from the reverse rotation sensor. It features.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 2, the rear slip warning device according to the embodiment of the present invention has a disk 10 installed to rotate synchronously with the wheel wheel and the disk 10 while being fixed to the inner knuckle arm of the wheel wheel. The pads are brought into contact with the disk 10 by the action of the caliper bracket 20 having the pads 25 and 26 sliding across both sides of the < RTI ID = 0.0 >) < / RTI > It is applied to the disc brake consisting of the caliper body 30 which is slid through the caliper bracket 20 so that the reverse rotation sensor 51 to detect the sliding of the disc 10 to the rear when the brake is operated, the driver It comprises a warning means 52 for warning and a control means 50 for operating the warning means 52 when the reverse rotation signal is input from the reverse rotation sensor (51).

Here, the reverse rotation sensor 51 is separated from the disk 10 before the brake operation and when the brake is operated, the reverse rotation sensor 51 flows along the caliper body 30 and contacts the disk 10 to reverse the rotation of the disk 10. Is made to detect.

In addition, the warning means 52 may be made of a warning light to warn the driver visually or a buzzer to warn the driver aurally, which is provided at a position where the driver can easily identify.

Looking at the operation of the present invention configured as described above are as follows.

First, when the brake is actuated by the driver, the pad 25 located inside the disk 10 by the pressing force of the piston 32 in the cylinder 31 contacts the disk 10 and centers the caliper bracket 20. The pads (25) and (26) of the disks through the parking brake lever or the process of contacting the pads (26) located on the outside of the disk 10 to the outside of the disk (10) by flowing the caliper body (30). In the process of contacting the (10), the reverse rotation sensor 51 is in contact with the disk 10 while flowing with the caliper body (30).

In the above state, when the pressing force of the pads 25 and 26 is inadvertently lowered and the disc 10 rotates in reverse, the reverse rotation sensor 51 outputs a signal according to the reverse rotation. The control means 50 which received the signal operates the warning means 52.

At this time, the driver recognizes the state in which the vehicle slips backward through the warning means 52, that is, a warning light or a warning sound of the buzzer, and quickly compensates the braking force through the brake pedal or the parking brake lever to prevent the sliding backward. Done.

As described above, the present invention operates the warning means when the reverse rotation signal of the disc is input from the reverse rotation sensor during brake operation, in particular, to the driver to inadvertently slip the rear of the vehicle due to carelessness when the vehicle stops on a sloped road. By giving a warning, there is an effect that can prevent in advance a safety accident due to contact with the vehicle and obstacles in the rear.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (4)

In the disc brake that generates friction force to the disc interlocked with the wheel through the contact of the pad by the piston pressure of the wheel cylinder, a reverse rotation sensor which detects the disc to slide backward when the brake is activated, and warns the driver And a warning means and a control means for operating the warning means when a reverse rotation signal is input from the reverse rotation detection sensor. The disk brake operation according to claim 1, wherein the reverse rotation detection sensor is separated from the disk before brake operation and is configured to detect the reverse rotation of the disk by contacting the disk while flowing along the caliper body when the brake is operated. Rear slip warning device. The rear slip warning device according to claim 1, wherein the warning means comprises a warning light that visually warns the driver. 2. The rear slip warning device according to claim 1, wherein the warning means is made of a buzzer that acoustically warns the driver.